An external steam cooler adjustment method

Abstract

The present application belongs to the technical field of heat exchange device, and particularly relates to an adjustment method of an external steam cooler, characterized by mainly comprising the following steps: S1, a spiral blade for sensing flow rate is arranged in a steam inlet pipe of the external steam cooler, and a transmission assembly is arranged at the pipe wall of the steam inlet pipe; S2, a conductive rod is connected to the end of the transmission assembly in a bent shape, two magnet stones with opposite magnetic properties are respectively placed in front of and behind the conductive rod, and the two ends of the conductive rod are respectively connected with two conductive rings. The present application can adjust the speed of cold water entering the external steam cooler according to the speed of steam entering the external steam cooler, so as to rapidly heat the cold water and ensure the heating performance of the external steam cooler.

Description

Technical Field

[0001] This invention belongs to the technical field of heat exchange devices, and in particular relates to an adjustment method for an external steam cooler. Background Technology

[0002] Heat exchangers are one of the more important pieces of equipment in the regenerative system of high-pressure heaters in power plant steam turbines. With the continuous advancement of technology and the increasing demands for the economic efficiency of generator sets, the cooling of high-pressure heaters in large units has evolved from being built into the main body to being separate heat exchange equipment, namely superheated heat exchangers. In this process, the steam is heated by the steam cooler and the feedwater is heated, so the steam parameters are lowered before entering the next stage of high-pressure heater.

[0003] An external steam cooler, as proposed in authorized patent CN 216977611 U, includes an outer shell, a water chamber end cap, and a heat exchange mechanism. The heat exchange mechanism includes a tube sheet, a U-shaped tube, a spacer tube, and an inner steam shell. The heat exchange mechanism also includes an outer steam shell disposed at the front end of the inner steam shell. The outer steam shell includes an outer steam shell body, a steam shell blocking plate installed at one end of the outer steam shell body, a shell insulation plate installed at the other end of the outer steam shell body, and a tube sheet insulation plate installed on the spacer tube. By providing an outer steam shell, the curved tubes in traditional coolers can be replaced, which has the functions of expanding capacity, preventing erosion, and reducing the difficulty of bending tubes, thereby reducing manual operation. In addition, after steam enters the outer shell body, it enters the outer steam shell in its entirety, and then enters the inner steam shell in two stages from the outer steam shell body, thus reducing the flow rate and protecting the U-shaped tube.

[0004] When using an external steam cooler, steam and cool water need to be introduced into it simultaneously. The steam heats the cool water for convenient use. Usually, the flow rate of cool water into the external steam cooler is fixed. When the amount of steam introduced into the external steam cooler is small, the temperature of the cool water will rise very slowly, which will affect the heating performance of the external steam cooler.

[0005] Therefore, we propose an adjustment method for an external steam cooler to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an adjustment method for an external steam cooler. This method solves the problem that, during use, an external steam cooler requires both steam and cool water to be introduced into it simultaneously. The steam heats the cool water for convenient use. However, the flow rate of cool water into the external steam cooler is usually fixed. When the amount of steam introduced into the external steam cooler is small, the temperature rise of the cool water is slow, which affects the cooling performance of the external steam cooler.

[0007] This invention provides the following technical solution: a method for adjusting an external steam cooler, characterized by mainly including the following steps:

[0008] S1. A spiral blade for sensing flow velocity is installed inside the steam inlet pipe of the external steam cooler, and a transmission component is installed on the pipe wall of the steam inlet pipe.

[0009] S2. Connect the bent conductive rod to the end of the transmission component, and place two magnets with opposite magnetic properties at the front and back of the conductive rod respectively, and connect the two ends of the conductive rod to two conductive rings respectively.

[0010] S3. Connecting wires are fixedly connected to the side walls of the two conductive rings respectively. The two connecting wires are electrically connected to the water pump outside the water tank through the sensing mechanism.

[0011] S4. When the steam flow rate in the steam inlet pipe slows down, the water pump flow rate will be automatically adjusted to slow down automatically.

[0012] The external steam cooler used in the above-described method for adjusting the inlet water speed of an external steam cooler includes a shell. Cylindrical tubes are fixedly connected to the upper and lower side walls of the shell. Multiple spiral tubes are connected to the side walls of opposite sides of the two cylinders. An air inlet pipe is fixedly connected to the lower side wall of the lower cylinder, and an air outlet pipe is connected to the upper side wall of the upper cylinder. A vertical cylinder is fixedly connected to the inner wall of the air inlet pipe via a bracket. A rotating rod is rotatably connected to the inner wall of the vertical cylinder. A spiral blade is fixedly connected to the upper end of the rotating rod. A horizontal rod is rotatably connected to the side wall of the air inlet pipe via a sealed bearing. Hinged bevel gears are fixedly connected to opposite ends of both the horizontal rod and the rotating rod. A conductive rod is fixedly connected to the left end of the crossbar. An installation cylinder is fixedly connected to the left side wall of the air inlet pipe via a snap-fit ​​mechanism. Two conductive rings are fixedly connected to the inner wall of the installation cylinder via a support frame. The two ends of the conductive rod are respectively in contact with the inner wall of the conductive rings. Two magnets with opposite magnetic attraction are fixedly connected to the inner wall of the installation cylinder. A water inlet pipe and a water outlet pipe are fixedly connected to the side wall of the housing. A water tank is placed on the right side of the housing. A water pump is fixedly connected to the side wall of the water tank. The water outlet of the water pump is connected to the water inlet pipe. A sensing mechanism is fixedly connected to the side wall of the water tank. The sensing mechanism is electrically connected to the water pump. The two conductive rings are electrically connected to the sensing mechanism.

[0013] Preferably, the sensing mechanism includes a sensing cylinder fixedly connected to the left side of the water tank. A metal block is fixedly connected to the inner wall of the sensing cylinder by a spring. An electromagnetic block is fixedly connected to the lower inner wall of the sensing cylinder. The two conductive rings are electrically connected to the electromagnetic block. A conductive plate is fixedly connected to the left side wall of the metal block. A resistance plate is fixedly connected to the inner wall of the sensing cylinder. The lower side of the resistance plate is electrically connected to the water pump. The metal block is electrically connected to an external power source.

[0014] Preferably, the locking mechanism includes a fixing ring fixedly connected to the outer wall of the intake pipe, a connecting ring fixedly connected to the outer wall of the mounting cylinder, a locking cover hinged to both the fixing ring and the connecting ring, a locking block fixedly connected to the right side wall of each of the two locking covers, a locking frame fitted to both locking blocks, a limiting hole provided on the side wall of the locking frame, a limiting pin inserted into the limiting hole, a vertical hole matching the limiting pin provided on the side wall of the locking block, a pull plate fixedly connected to the upper end of the limiting pin, and a spring fixedly connected to the pull plate and the side wall of the locking frame on opposite sides.

[0015] Preferably, a filter screen is fixedly connected to the inner wall of the water tank.

[0016] Preferably, the right side wall of the water tank is provided with a drain outlet, and a baffle is hinged to the drain outlet. The baffle and the lower side wall of the water tank are fixedly connected with a fixing block. The two fixing blocks are fitted with the same fixing frame. The side wall of the fixing frame is provided with a horizontal hole, and a horizontal pin is inserted into the horizontal hole. The side walls of the two fixing blocks are provided with horizontal holes that match the horizontal pins.

[0017] Preferably, a waterproof pad is fixedly connected to the inner wall of the baffle.

[0018] Preferably, a pull ring is fixedly connected to the side wall of the pull plate.

[0019] Preferably, a graphite conductive layer is fixedly connected to the inner wall of the conductive ring.

[0020] Preferably, the spiral tube is made of copper alloy.

[0021] Preferably, the outer side of the air intake pipe is provided with a heat insulation layer.

[0022] Compared with existing technologies, the advantages of an external steam cooler adjustment method are:

[0023] 1. By incorporating components such as a body, cylinder, spiral tube, air inlet pipe, vertical cylinder, rotating rod, spiral blade, horizontal rod, conductive rod, mounting cylinder, conductive ring, magnet, water inlet pipe, water outlet pipe, water tank, water pump, induction cylinder, metal block, electromagnetic block, conductive plate, and resistance plate, the system can adjust the rate of cold water entering the external steam cooler based on the rate of steam entering the external steam cooler when using it for waste heat recovery and reuse. This allows the cold water to heat up quickly, ensuring the heating performance of the external steam cooler. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an external steam cooler adjustment method provided by the present invention;

[0025] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle;

[0026] Figure 3 This is a schematic diagram of the clip structure in an external steam cooler adjustment method provided by the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the air inlet pipe in an external steam cooler adjustment method provided by the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the induction cylinder in an external steam cooler adjustment method provided by the present invention.

[0029] In the diagram: 1. Shell; 2. Cylinder; 3. Spiral tube; 4. Air inlet pipe; 5. Vertical cylinder; 6. Rotating rod; 7. Spiral blade; 8. Horizontal bar; 9. Conductive rod; 10. Mounting cylinder; 11. Conductive ring; 12. Magnet; 13. Water inlet pipe; 14. Water outlet pipe; 15. Water tank; 16. Water pump; 17. Induction cylinder; 18. Metal block; 19. Electromagnetic block; 20. Conductive plate; 21. Resistance plate; 22. Fixing ring; 23. Connecting ring; 24. Cover; 25. Block; 26. Frame; 27. Limiting pin; 28. Pull plate; 29. ​​Filter screen; 30. Drain outlet; 31. Fixing block; 32. Fixing frame; 33. Horizontal pin; 34. Waterproof pad. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1-5 As shown, an adjustment method for an external steam cooler mainly includes the following steps:

[0032] S1. A spiral blade 7 for sensing flow velocity is installed inside the steam inlet pipe 4 of the external steam cooler, and a transmission assembly is installed on the pipe wall of the steam inlet pipe 4.

[0033] S2. Connect the bent conductive rod 9 to the end of the transmission component, and place two magnets 12 with opposite magnetic properties at the front and back of the conductive rod 9 respectively, and connect the two ends of the conductive rod 9 to two conductive rings 11 respectively.

[0034] S3. Connecting wires are fixedly connected to the side walls of the two conductive rings 11 respectively. The two connecting wires are electrically connected to the water pump 16 outside the water tank 15 through the sensing mechanism.

[0035] S4. When the steam flow rate in the steam inlet pipe 4 slows down, the flow rate of the water pump 16 will be automatically adjusted to slow down the flow rate of the water pump 16.

[0036] The external steam cooler used in the above method for adjusting the water inlet speed of the external steam cooler includes a shell 1. Cylinders 2 are fixedly connected to the upper and lower side walls of the shell 1. Multiple spiral tubes 3 are connected to the side walls of opposite sides of the two cylinders 2. An air inlet pipe 4 is fixedly connected to the lower side wall of the lower cylinder 2, and an air outlet pipe is connected to the upper side wall of the upper cylinder 2. A vertical cylinder 5 is fixedly connected to the inner wall of the air inlet pipe 4 via a bracket. A rotating rod 6 is rotatably connected to the inner wall of the vertical cylinder 5. A spiral blade 7 is fixedly connected to the upper end of the rotating rod 6. A horizontal rod 8 is rotatably connected to the side wall of the air inlet pipe 4 via a sealed bearing. A bevel gear, hinged to each other, is fixedly connected to the opposite ends of the horizontal rod 8 and the rotating rod 6. The left end of the horizontal rod 8 is fixedly connected to... A conductive rod 9 is connected to the left side wall of the air inlet pipe 4, and an installation cylinder 10 is fixedly connected to it via a snap-fit ​​mechanism. Two conductive rings 11 are fixedly connected to the inner wall of the installation cylinder 10 via a support frame. The two ends of the conductive rod 9 are in contact with the inner wall of the conductive rings 11 respectively. Two magnets 12 with opposite magnetic attraction are fixedly connected to the inner wall of the installation cylinder 10. A water inlet pipe 13 and a water outlet pipe 14 are fixedly connected to the side wall of the housing 1. A water tank 15 is placed on the right side of the housing 1. A water pump 16 is fixedly connected to the side wall of the water tank 15. The water outlet of the water pump 16 is connected to the water inlet pipe 13. A sensing mechanism is fixedly connected to the side wall of the water tank 15. The sensing mechanism is electrically connected to the water pump 16. The two conductive rings 11 are electrically connected to the sensing mechanism.

[0037] The sensing mechanism includes a sensing cylinder 17 fixedly connected to the left side of the water tank 15. A metal block 18 is fixedly connected to the inner wall of the sensing cylinder 17 by a spring. An electromagnetic block 19 is fixedly connected to the lower inner wall of the sensing cylinder 17. Two conductive rings 11 are electrically connected to the electromagnetic block 19. A conductive plate 20 is fixedly connected to the left side wall of the metal block 18. A resistance plate 21 is fixedly connected to the inner wall of the sensing cylinder 17. The lower side of the resistance plate 21 is electrically connected to the water pump 16. The metal block 18 is electrically connected to an external power source. It can sense the speed of rotation of the rotating rod 6.

[0038] The locking mechanism includes a fixing ring 22 fixedly connected to the outer wall of the air intake pipe 4, a connecting ring 23 fixedly connected to the outer wall of the mounting cylinder 10, a locking cover 24 hinged to each other on the fixing ring 22 and the connecting ring 23, a locking block 25 fixedly connected to the right side wall of each of the two locking covers 24, a locking frame 26 fixedly connected to the two locking blocks 25, a limiting hole opened on the side wall of the locking frame 26, and a limiting pin 27 inserted into the limiting hole, a vertical hole matching the limiting pin 27 opened on the side wall of the locking block 25, a pull plate 28 fixedly connected to the upper end of the limiting pin 27, and the same spring fixedly connected to the side wall of the pull plate 28 and the locking frame 26 on opposite sides, facilitating the removal of the mounting cylinder 10.

[0039] A filter screen 29 is fixedly connected to the inner wall of the water tank 15 to facilitate the filtration of cold water.

[0040] A drain outlet 30 is provided on the right side wall of the water tank 15, and a baffle is hinged to the drain outlet 30. A fixing block 31 is fixedly connected to the baffle and the lower side wall of the water tank 15. The two fixing blocks 31 are fitted with the same fixing frame 32. A horizontal hole is provided on the side wall of the fixing frame 32, and a horizontal pin 33 is inserted into the horizontal hole. The side walls of the two fixing blocks 31 are provided with horizontal holes that match the horizontal pins 33, so as to facilitate the discharge of sewage from the water tank 15.

[0041] A waterproof gasket 34 is fixedly connected to the inner wall of the baffle, which improves the sealing performance of the baffle.

[0042] Pull rings are fixedly connected to the side wall of pull plate 28 for easy pulling.

[0043] A graphite conductive layer is fixedly connected to the inner wall of the conductive ring 11, which reduces the wear of the conductive ring 11.

[0044] The spiral tube 3 is made of copper alloy, which ensures its heat dissipation capacity.

[0045] An insulation layer is provided on the outside of the intake pipe 4, which improves the insulation capacity of the intake pipe 4.

[0046] The operating principle of the present invention is explained as follows: A spiral blade (7) for sensing flow velocity is installed in the steam inlet pipe (4) of the external steam cooler, and a transmission assembly is installed on the pipe wall of the steam inlet pipe (4); S2, a bent conductive rod (9) is connected to the end of the transmission assembly, and two magnets (12) with opposite magnetic properties are placed in front and behind the conductive rod (9), and the two ends of the conductive rod (9) are connected to two conductive rings (11) respectively; S3, connecting wires are fixedly connected to the side walls of the two conductive rings (11), and the two connecting wires are electrically connected to the water pump (16) outside the water tank (15) through the sensing mechanism; S4, when the steam flow speed in the steam inlet pipe (4) slows down, the flow rate of the water pump (16) will be automatically adjusted so that the flow rate of the water pump (16) will automatically slow down.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for adjusting an external steam cooler, characterized in that, The main steps include: S1. A spiral blade (7) for sensing flow velocity is installed in the steam inlet pipe (4) of the external steam cooler, and a transmission assembly is installed on the pipe wall of the steam inlet pipe (4). S2. Connect the bent conductive rod (9) to the end of the transmission assembly, and place two magnets (12) with opposite magnetic properties in front and behind the conductive rod (9), and connect the two ends of the conductive rod (9) to two conductive rings (11) respectively. S3. The side walls of the two conductive rings (11) are respectively fixedly connected with connecting wires, and the two connecting wires are electrically connected to the water pump (16) outside the water tank (15) through the sensing mechanism. S4. When the steam flow rate in the steam inlet pipe (4) slows down, the flow rate of the water pump (16) will be automatically adjusted so that the flow rate of the water pump (16) will automatically slow down. An external steam cooler includes a shell (1), on which cylinders (2) are fixedly connected to the upper and lower side walls. Multiple spiral tubes (3) are connected to the side walls of the two cylinders (2) on opposite sides. An air inlet pipe (4) is fixedly connected to the lower side wall of the lower cylinder (2), and an air outlet pipe is connected to the upper side wall of the upper cylinder (2). A vertical cylinder (5) is fixedly connected to the inner wall of the air inlet pipe (4) via a bracket. A rotating rod (6) is rotatably connected to the inner wall of the vertical cylinder (5). A spiral blade (7) is fixedly connected to the upper end of the rotating rod (6). A horizontal rod (8) is rotatably connected to the side wall of the air inlet pipe (4) via a sealed bearing. A bevel gear, hinged to each other, is fixedly connected to the opposite ends of the horizontal rod (8) and the rotating rod (6). A conductive rod (9) is fixedly connected to the left end of the horizontal rod (8). (4) The left side wall is fixedly connected to the mounting cylinder (10) by a snap-fit ​​mechanism. The inner wall of the mounting cylinder (10) is fixedly connected to two conductive rings (11) by a support frame. The two ends of the conductive rod (9) are respectively in contact with the inner wall of the conductive rings (11). The inner wall of the mounting cylinder (10) is fixedly connected to two magnets (12) with opposite magnetic attraction. The side wall of the housing (1) is fixedly connected to the inlet pipe (13) and the outlet pipe (14). The right side of the housing (1) is placed with a water tank (15). The side wall of the water tank (15) is fixedly connected to a water pump (16). The outlet end of the water pump (16) is connected to the inlet pipe (13). The side wall of the water tank (15) is fixedly connected to a sensing mechanism. The sensing mechanism is electrically connected to the water pump (16). The two conductive rings (11) are electrically connected to the sensing mechanism. The sensing mechanism includes a sensing cylinder (17) fixedly connected to the left side of the water tank (15). A metal block (18) is fixedly connected to the inner wall of the sensing cylinder (17) by a spring. An electromagnetic block (19) is fixedly connected to the lower inner wall of the sensing cylinder (17). The two conductive rings (11) and the electromagnetic block (19) are electrically connected. A conductive plate (20) is fixedly connected to the left side wall of the metal block (18). A resistance plate (21) is fixedly connected to the inner wall of the sensing cylinder (17). The lower side of the resistance plate (21) is electrically connected to the water pump (16). The metal block (18) is electrically connected to an external power source.

2. The method for adjusting an external steam cooler according to claim 1, characterized in that, The locking mechanism includes a fixing ring (22) fixedly connected to the outer wall of the air intake pipe (4), a connecting ring (23) fixedly connected to the outer wall of the mounting cylinder (10), the fixing ring (22) and the connecting ring (23) are fitted with the same hinged locking cover (24), the right side walls of the two locking covers (24) are fixedly connected with locking blocks (25), the two locking blocks (25) are fitted with the same locking frame (26), the side wall of the locking frame (26) is provided with a limiting hole, and a limiting pin (27) is inserted into the limiting hole. The side wall of the locking block (25) is provided with a vertical hole that matches the limiting pin (27). The upper end of the limiting pin (27) is fixedly connected with a pull plate (28), and the pull plate (28) and the side wall of the locking frame (26) on opposite sides are fixedly connected with the same spring.

3. The method for adjusting an external steam cooler according to claim 1, characterized in that, A filter screen (29) is fixedly connected to the inner wall of the water tank (15).

4. The adjustment method for an external steam cooler according to claim 1, characterized in that, The water tank (15) has a drain outlet (30) on its right side wall, and a baffle is hinged to the drain outlet (30). The baffle and the lower side wall of the water tank (15) are fixedly connected to a fixing block (31). The two fixing blocks (31) are fitted with the same fixing frame (32). The side wall of the fixing frame (32) has a horizontal hole, and a horizontal pin (33) is inserted into the horizontal hole. The side walls of the two fixing blocks (31) have horizontal holes that match the horizontal pin (33).

5. The method for adjusting an external steam cooler according to claim 4, characterized in that, A waterproof pad (34) is fixedly connected to the inner wall of the baffle.

6. The method for adjusting an external steam cooler according to claim 2, characterized in that, A pull ring is fixedly connected to the side wall of the pull plate (28).

7. The method for adjusting an external steam cooler according to claim 1, characterized in that, A graphite conductive layer is fixedly connected to the inner wall of the conductive ring (11).

8. The method for adjusting an external steam cooler according to claim 1, characterized in that, The spiral tube (3) is made of copper alloy.

9. The method for adjusting an external steam cooler according to claim 1, characterized in that, The air intake pipe (4) is provided with an insulation layer on the outside.

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